I am usnure what I can say. The default theme is definitely a nice one but a custom one would do the community wonders. You have a lot of boards but I think that's okay due to having the tabs.
I think it looks really good honestly, there are several things I do not like and would never have but they are all personal preference things so they are irrelevant I guess.
I'd really like the review section to be up and ready soon.
There's too much space above the index.
There's a poll and a welcome guest.
I know there is a collapse key for the welcome guest but it is still very much huge.
With the welcome guest open, the boards only show up under half of the screen. And my monitor is fairly big, 1600x1200.
With the welcome guest collapsed, it is still under 50% of the screen.
Congrats on almost 700 threads and 4000 posts, good luck